How do you prepare for a CT scan?

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Prepare for a CT scan by wearing comfortable clothing, removing metal objects from the body and bringing a list of current medications and vitamins, explains WakeMed Health & Hospitals. Some patients may also be required to refrain from eating or drinking for a certain period of time.

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Prior to undergoing a CT scan, female patients should tell the doctor or technician if there is a possibility they are pregnant, notes WakeMed. Certain conditions, including asthma, heart disease, thyroid problems, kidney problems and diabetes, place patients at an increased risk of adverse effects from the scan. It is important for patients to let the doctor know if they have a history of any of these conditions. It is also crucial to mention any allergies, particularly if the patient has a known allergy to contrast materials.

Metal objects on a patient's body at the time of a CT scan can have a negative impact on the quality of the images, according to WakeMed. For the highest quality test results, the technician may ask that items such as eyeglasses, jewelry, hairpins, dental appliances and hearing aids not be worn inside of the scanner. Patients may leave these items at home to make their appointments go quicker or can remove them in the hospital if it is not possible to leave them at home.